Method for minimizing call setups in isdn pbx systems
CA 2208919 A1 · Owner: Yen, Harry · Inventors: Dang, Mieu-Hong; Dilley, Selena; Yen, Harry
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for operating an ISDN PBX110 for connecting M BRI lines13-15 connected to a central office12 to N terminals21-28 31-38, 41-48 connected to the PBX110 (N>M) such that any B channel of any of the, BRI lines13-15 can be connected to any terminal utilizing a connect in accordance with Bellcore National Standard N1-2. Each of the terminals 21-28, 31-38, 41-48 is associated with one and only one, of the BRI lines, 13-15. The present invention achieves its advantages over the prior art by defining a plurality of EKTS groups1-4. Each of the EKTS groups1-4 includes at least one of the terminals21-28 31-38, 41-48 associated with, each of the BRI lines13-15. When an incoming call is received …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed June 26, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 26, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 26, 2019.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.